chore(pythnet/message_buffer): use proper Rust version in CI

Author: Riateche

.github/workflows/ci-message-buffer-idl.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: nightly-2023-03-01
+          toolchain: 1.66.1
           components: rustfmt, clippy
       - name: Install Solana
         run: |

.pre-commit-config.yaml

@@ -82,7 +82,7 @@ repos:
       - id: cargo-clippy-message-buffer
         name: Cargo clippy for message buffer contract
         language: "rust"
-        entry: cargo +nightly-2023-03-01 clippy --manifest-path ./pythnet/message_buffer/Cargo.toml --tests --fix --allow-dirty --allow-staged --features test-bpf -- -D warnings
+        entry: cargo +1.66.1 clippy --manifest-path ./pythnet/message_buffer/Cargo.toml --tests --fix --allow-dirty --allow-staged --features test-bpf -- -D warnings
         pass_filenames: false
         files: pythnet/message_buffer
       # Hooks for pythnet_sdk